I looked up the interface and it is a solid design with an optoisolator and isolation transformers. May I suggest that hams here in the U.S. who are interested in building their own interface give serious consideration to the Unified Microsystems, SCI-6 Sound Card Interface. This is a kit but you can not really put it all together as nicely for the $25 + $5.50 shipping. International shipping is probably impractical at $20.
I have read that some laptops can be a problem with the optoisolator although that would likely be true for similar optoisolators. 73, Rick, KV9U Phillip wrote: > Hi, > I have just built up the sound card interface by Jerry KD5ZUG for use > with FLDIGI etc > http://www.jbgizmo.com/page28.htm > > I was wanting to use it on my laptop a Toshiba Satellite 2140CDS running WIN > 2000 Pro, but there appears to be not enough > drive or pull down for this to work as it should. > > It does what it is meant to on my Desk top, which would indicate that the > Laptop hasn't the power on its RS232 port. > > The strange thing in DOS before WIN 200 boots it does what it is meant to .. > > When the Laptop boots up the LEDS on the board light up as per the docs but > once WIN 2000 screen appears the LEDs go out and don't > light up again . > > Has anyone any ideas ??? > > Many thanks > > 73 > > Phillip > ZL2TZE > > > > ------------------------------------ > > Announce your digital presence via our Interactive Sked Pages at > http://www.obriensweb.com/sked > > Recommended digital mode software: Winwarbler, FLDIGI, DM780, or Multipsk > Logging Software: DXKeeper or Ham Radio Deluxe. > > > > Yahoo! Groups Links > > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.238 / Virus Database: 270.12.23/2106 - Release Date: 05/09/09 > 06:54:00 > >
